Windows Live Mail on Windows 10 – I notice a quirk.

I've used Windows Live Mail (WLM) since it became available.

I see a "quirk"  that I hope someone can tell me what it means.  It's minor.

On the ribbon where I log in, my profile picture looked like this recently.

  {green border}

Today it looks like this.

{blue border}

It has had a red border in the past.

TIA